Registering mechanism.



No. 764,069. 3 PATENTED JULY 5, 1904. E. H. PALMER.

REGISTERING MECHANISM.

APPLICATION FILED OCT. 7, 1903.

N0 MODEL. 7 SHBETSSHEET 1.

attoznugo PATENTED JULY 5, 1904.

7 SHEETSSHEET 2.

E. H. PALMER.

REGISTERING MECHANISM.

APPLICATION FILED OCT. 7, 1903.

N0 MODEL,

PATENTED JULY 5; 1904.

E. H. PALMER. REGISTERING MECHANISM.

APPLICATION FILED OUT. 7, 1903.

am llemto'c 13% Qtto'awz'go 7 SHEETS-SHEET 3.

fi/w'wu Y N0 MODEL.

No. 764,069. PATENTED JULY 5, 1904. E. H. PALMER.

REGISTERING MECHANISM.

APPLICATION FILED OCT. 7, 1903.

NO MODEL.

7 SHEETS-SHEET 5.

P-ATBNTED JULY 5, 1904.

E. H. PALMER. REGISTERING MECHANISM.

APPLICATION FILED OGT. 7, 1903.

7 SHEETS-SHEET 6.

N0 MODEL.

///fla W 5] MW z attain/24 n E. H. PALMER.

PATENTED JULY 5, 1904.

REGISTERING MECHANISM.

APPLICATION FILED OOTII. 1903.

7 SHEBTSSHEET 7.

iatented duly 5, 1904.

PATENT OFFICE.

EDWARD H. PALMER, OF READING, MASSACHUSETTS.

REGISTERING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 764,069, dated J uly 5, 1904. Application filed October 7, 1903. Serial No. 176,135. (No model.)

To wll whom it may concern:

' Be it known that I, EDWARD H. PALMER, of Reading, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Registering Mechanism, of which the following is a specification.

This invention relates to registering mechanism, and although shown in the accompanying drawings as a portion of a calculating attachment for type-writing machines, such as illustrated,described, and claimed in my application filed August 30, 1902, Serial N 0. 121,633, it is to be understood that in this application I claim the improvements in registering mechanism for all purposes which require the carrying of tens from one wheel to another.

The particular object of the present invention is-to produce improved registering mechanism capable of being operated forward or backward to either add or subtract; and to these ends the invention consists in the combinations and relative arrangements of parts, substantially as hereinafter described and claimed.

In the accompanying drawings, Figure 1 represents an embodiment of the invention in an attachment to a type-writing machine of the type known as Remington, the latter being indicated only by dotted lines, parts of the present invention being shown in end elevation and others being indicated as in section on theline 1 1 of Fig. 3. Fig. 2 representsa plan of the upper parts of the mechanism with parts in horizontal section and parts of a Remington machine being indicated in dotted lines. Fig. 3 represents a rear elevation. Fig. 1 represents a sectional plan on line 4 4. of Fig. 1. Fig. 5 represents adetail elevation, partly in section, on the line 5 5 of Fig. 2. Fig. 6 represents an elevation from the right-hand end of Fig. 3 omitting the bearing-bracket at the extreme right. Fig. 7 represents a detail section on line 7 7 of Fig. 1. Fig. 8represents a detail elevation of the power-pawl and connections. Fig. 9 represents a section on line 9 9 of Fig. 6. Fig. 10 represents a section on line 10 10 of Fig. 9. Fig. 11 represents a detail elevation of one of the numberwheel detent mechanisms. Figs. 12 and 13 represent, respectively, side and peripheral elevations of one of the number-wheels. Fig. 1 1 represents a detail section on the line 14 14: of Fig. 1. Fig. 15 is a detail view representing a modification in the carrying-wheel mechanism, the line of section through the shafts 6 10 being the same as at the upper right-hand corner of Fig. 1. Fig. 16 is a detail, on a larger scale, of mechanism shown in Fig. 15 and looking in the opposite direction, said Fig. 16 being on the line 16 16 of Fig. 17 and looking in the direction of the arrow. Fig. 17 represents a section on line 17 17 of Fig. 16. Fig. 18 is a detail similar to Fig. 16, but representing another modification hereinafter described.

' Similar reference characters designate the same or similar parts throughout all the views.

The main frame of the attachment in the embodiment of the invention which is illustrated is composed of castings or brackets 1 1, connected together by certain shafts or rods, hereinafter described, and by cross-bars 2 2. Clamps by which this frame may be secured to the frame of a well-known form of typewriting machine are represented at 3, 4, and 5 in Figs. 1 and 2.

Referring to Figs. 1, 2, 3, 12, and 13, a shaft is represented at 6, which shaft supports the number-wheels 7. The numberwheels are loosely mounted upon the shaft 6. As shown in Figs. 2 and 3, there are nine of these number-wheels spaced, as indicated in said figures, to provide for the punctuation of the work.

It will be readily understood that when an apparatus of this type is used in connection with a type-writing machine where the decimal-point will be employed and dividing commas suitable spaces must be provided for such punctuation. With the spacing represented in Figs. 2 and 3 the two number-wheels at the left are for the cents-columns, the adjoining wide space at the right is to permit the writing of the period or decimal-point, the three number-wheels next in the same direction are for the dollars within the hundreds, the next wide space is for the next comma, the next three number-wheels for dollars in Each number-wheel 7 is loosely mounted, as above stated. Secured to one side of it is a pinion 8. Each pinion 8 meshes with pinion 9, which I call the carrying-wheel and which is mounted to rotate upon a stationary carrying-wheel shaft 10. Adjacent to each pinion'9 a small gear 11 is secured upon the shaft 10. A pinion 12, mounted on a pin13, which projects from the sideof the carrying-wheel 9, meshes with. gear 11 and carries a finger 14, adapted to engage one of a series of ten' pins 15, which project in a circular series from the side of the number-wheel 7. It will be noticed thatwhenever a punctuation-space is left, as above described, the pinion or carrying-wheel 9 at the left of such space (see Fig. 2) does not directlycarry a pinion 12 and finger 14. Instead to bridge the space suchpinion 9 is carried at the left of a sleeve 16, which at the right-hand end carries a disk 17,- and said disk in turn carries the pinion 12 and finger 14 for the first number-wheel at the right of said space.

The mechanism described for carrying ten from one number-wheel tothenext higher is the important feature of my invention, as it not. only gives an accelerated ,motion to the finger to move the adjacent number-wheel exactly one-tenth of a rotation, but it also leaves the number wheel free to be moved according to'its own units and is operative in either direction, so as to permit the operator to either add or subtract, as occasion may require, as will be more fully referred to hereinafter.

In Fig. 2 it will be noticed that spacingsleeves 18 are secured on the shaft 6, as by set-screws19, between some of thepinions 8 and certain clutches, which will be hereinafter described.

Meansfor holding the numeral-wheels in proper alinedposition after operation of any one or more of'them areprovided as follows: A rod 20 (see Figs. 1,2, 3, and 11) is mounted inthe upper portion 21 of the frame above the shaft 6. On said rod or shaft 20 are pivotally mounted detent-arms 22, one for each number-wheel mechanism. Aspring 23, having one end secured inthe rod 20 and having the other end bearing upon the upper edge of the arm 22, normally holds said arm downwardfso as to press a roll. 24, carried by said arm, into one of aplurality of recesses formed in the periphery of a disk 25, secured to the side of thepinion 9. This .detent construction; prevents any liability of the carryingwheels or the number-wheels being moved be yond the desired point. Moreover, the line of detents preserves the uniformity of position of the seriesof number-wheels on their axes, so that the result, which is to be read at any time, may be seen in perfect alinement.

As has beenstated, the number-wheels are all loose on the shaft 6. Means are provided, however, to temporarily connect either one of them with said shaft, so that when said shaft is to be rotated by the mechanism to be described the connected number-wheel will rotate one or more steps, itbeing understood, of course, that Whenever one carrying-wheel rotates beyond the tenth unit it carries the ten to the next higher number-wheel through the pinion 8, carrying-wheel 9, pinion and finger 12 14, and one of the series of pins 15 on the next higher number-wheel. The means which I have. shown to connect each numberwheel with the shaft 6 comprise a clutch member 26, splined on the shaft (see Fig. 2) and having teeth adapted to engage coacting teeth of a clutch member 27, formed by recessing the hub portion of the number-wheel 7, as clearly shown upon comparing Figs. 2 and 12. Each clutch is formed with a peripheral groove 28 to receive the shifting arm 29, (see Figs. 3 and 14,) which extends upward from the shaft 30, (see also Fig. 2,) having bearings in the cross-bars 2 2 and provided at one end with acrank-arm 31, having a wrist-pin and a roll'32 thereon. The clutch members 26 are all normally held toward the left (in Fig. 3) by means of springs 33, (see Figs. 1 and 2,) coiled on the shafts 30 and connected thereto and to a fixed part, such as one of the bars 2. Said springs normally tend to rock the shafts so that the clutch members 26 will be out of engagement with the clutch members 27, and the crank-arm rolls in their lower position.

To selectthe particular clutch which is to be actuated so as to cause a particular number-wheel to be rotated by the power mechanism and to control this selection by the position of the. typewriter carriage along its usual slide rods or way, I employ the following mechanism An upright finger 34 is mounted to slide on a fixed rod 35, (see Figs. 1 and 3,) the sleeve or hub of said finger having a pin or key fittinga longitudinal groove 35 in said rod. The upper end of the finger 35 is beveled in both directions, so as to pass under and raise the rolls 32 when moving in either direction. When said arm stops under any roll, the rock-shaft carrying that roll is held in such position that its clutch member is in mesh with the .clutch member of the selectednumber-wheel, and the latter is ready to be rotated when the shaft 6 is actuated. The arm 34: is moved lengthwise of the rod 35 by the movement of .the type-writer carriage upon its usualguide-rods and stops when the carriage stops. The connections to produce these results are as follows: In .Fig.

1, 36 represents the rear carriage guide-rod of 2. Remington, on which rod the arm 37 of the carriage slides, as usual. 'Said arm 37 is indicated by dotted lines in Figs. 1 and 2. In the present embodiment of my invention I utilize said ordinary arm 37 as the support or means of attachment to the carriage for a bracket 38, having a slot to receive a steel ribbon and a clamp 39 for fastening the ribhon in said slot. The steel ribbon-belt 40 is an endless one and is mounted on two pulleys 41 and 42, said pulleys having peripheral pins or studs 43 entering holes 44 in the belt to prevent slipof the belt on said pulleys. It will now be understood that the movement of I the type-writer carriage in one direction produces a step-by-step rotation of the pulleys 41 and 42 through the medium of the belt 40; but said movement is slight, being only in accordance with the usual feed-ratchet of the type-writer. The amount of this movement mustbe multiplied in order to carry the clutch-selecting finger 34 the necessary distance from one to the other of the rolls 32, since it is practically impossible to arrange mechanical parts of the nature herein involved so close together as to be able to make use of such slight advances as are imparted to the ribbon 40. I therefore secure larger pulleys 45 so as to rotate with the pulleys 41 and 42 upon the shafts of the latter, said shafts being mounted in bearings 45, suitably supported by the end brackets of the frame. Loosely mounted upon the same shafts are two other pulleys, 46 46, for a purpose hereinafter explained. An endless steel belt 47 is carried by the pulleys 45, and to the lower stretch of this belt is connected a bracket or arm 48, projecting laterally from the hub of the sliding cam-,finger-34. (See Fig. 1.) The belt passes through a slot in said arm 48 and is held by a clamp 49. Through these connections the cam-finger-34 is caused to move simultaneously with the type-writing carriage and to actuate 'a clutch 26,'stopping with the carriage and holding the particular clutch so that the number-wheel that will be actuated when the shaft'6 turns will be the proper one for that particular figure, which is imprinted in a column by the type-key.

I will now describe the means whereby the writing of a particular numeral-by the type- I writer will cause an equivalent rotation of the selected number-wheel.

In Fig. 1 a type-lever link such as employed in the Remington machine is shown at 50 in dotted'lines. Similarly illustrated at 51 is a key-lever arm, which connects with said link. Engaging the under side of the bent portion of the key-lever arm 51 is a lever 52,. pivoted on the cross-rod 53, which lever 4, there are nine pairs of such levers spaced, substantially, as are the key-levers of a typewriting machine carrying or connected with the numeral keys or type. It will be noticed in Fig. 4 that the left-hand lever 52 is longer than the others. This is because the particular attachment shown herein is designed for use in connection with a Remington typewriter in which the key-rods are so arranged that in'-cross-section they would present a somewhat oval arrangement and in which the lower-case 1 key is used for writing the numeral 1' and in which the l key-link is arranged near the front of the machine, while the links for the other numerals are arranged in a substantially straight row at the back of the machine.

Each lever 54'at its rear end receives through it the lower end of a link 57 screw-threaded at its lower end and provided with set-nuts 58 and 59 above and below the lever. Each link 57 at its upper end is pivotally connected with a stop-lever 60. (See Figs. 1 and 3.) Each stop-lever is pivotally mounted upon a shaft 61, from which a pin 62 projects into a slot 63, formed in the hub of the stop-lever. The slot 63 extends around only about onefourth of the hub and is so positioned relatively to the pin 62that the operation of any pair of levers'52 54 will oscillate the particular or selected lever 60, so as to elevate its inner end, and owing to the contact of the upper end of the slot 63 with the pin 62 will oscillate the shaft 61; but when the other pins which project from said shaft 61 move downward they will not cause the oscillation of any of the other stop-levers 60, owing to the fact that said pins will simply move to the required distance along the slots 63 in thehubs of said levers. These stop-levers coact with the stop-fingers, which will be hereinafter described.

Rigidly connected with one end of the shaft 61 is an arm 64, which is connected, by means of a short link 65, with one end of a lever 66, pivoted at 67 to the frame of the machine and having a roller 68 at its inner end to operate one of the racks which will be presently described. A longer link 69 is pivotally connected with and depends from a lever 70, pivoted on the shaft 10. (See Figs. 3, 5, and 8.) The lower end of the link 69 passes through an opening in the outer. endof the arm 64 and has its screw-threaded end provided with As will now be understood, the

cause the arm 64 to operate both of thele'vers 66 and 70 through the links 65 and 69,'respectively. As shown in Fig. 1, the upper end of the link 65 extends through the outer end of the lever 66 and is provided with a nut 74, between which and the top of the lever 66 is a spring 75. Said spring therefore insures that the upward pressure of theroller 68 against the under side of the rack-bar (to be described) will be a yielding one.

The stop-fingers which cooperate with the stop-lever 60 are shown at 76 in Figs. 1 and 3. They are rigidly connected with a shaft 77 to oscillate therewith. Said shaft, through connectionswhich will be described, controls the amount of rotation which is imparted to the number-Wheel shaft 6 by the power mechanism when the latter is released, and therefore the amount of rotation that will be imparted to that particular number-wheel. that has been clutched to the said shaft 6 will be controlled by the particular stop-lever 60 which has been actuated, as hereinbefore described. This is because the fingers 76 are, as shown, spaced to accord with the spacing of the levers 60 and extend in different radial directions from the shaft 77, forming a helical series. For instance, if the central lever 60 of the series of nine has been actuated by the type-lever having the numeral 6 the central finger 76 before it contacts with the raised inner end of said lever 60 will permit the rotation of the shaft 77 and of the numher-Wheel shaft 6 to just the amount required to cause any clutched number-wheel to increase the indication by six.

The above reference to the central lever 60 as being actuated by the type-lever having the numeral 6 applies to the embodiment of the invention here illustrated as applicable to a Remington machine. In such machines the numeral 1 is written by the use of the l key-lever, which is quite close to 9 key-lever. Referring to Fig. 3 of the drawings, the stop-finger 76 at the extreme right of said figure is the one to coact with the number 2 key-lever of the type-writer, the next toward the left is for the number 3 key-lever, and so on until the next to the last at the left is for the number 9 keylever. This latter appears short in Fig. 3; but by reference to Fig. 1 it will be seen that all of the fingers 76 are of the same length. The finger 76 at the extreme left in Fig. 3 is to coact with the stop-lever that is actuated by the l or number l key-lever, and it therefore projects from the shaft 77 at an angle more closely resembling that of the finger 76 at the extreme right (for 2) than the one which is next to it, (for 9.) The stop-finger shaft 77 is provided with a gear 7 8, meshing with an idler-pinion 79, which in turn meshes with .a large gear 80, that is mounted freely on shaft 81.

I Will now describe the power mechanism and the connections by which it causes the gear 80, and consequently the shaft 77 and the stop-fingers 76, to'be actuated.

Referring to Figs. 2 and 3, a bracket or extension ofthe frame is shown at 82. Mounted in' said bracket and in the adjacent end piece 1 of the frame is a shaft 83, which I will hereinafterrefer to as the power-shaft. Said shaft is more fully shown in Figs. 6, 9, and 10. It is fixed in its bearings, as by a setscrew 84. Mounted loosely on the shaft 83 is a ratchet-wheel 85. Also loosely mounted on said shaft is a gear 87 separated from the wheel 85 by the hub 86 of the latter. A spring 88, which I call a power-spring in this embodiment of the invention, is connected at one end to the hub 86 and at the other end to a pin 89, projecting from the gear 87. Secured to the gear 87 is a ratchet 90, the teeth of which are engaged by a pawl 91, (see Fig. 6,) attached to and carried by the side of a gear 92, loosely mounted on shaft 83. (See Figs. ,3 and 9.) The power-spring is wound up automatically by each reverse movement of the type-writer carriage, as will presently be explained. To place said spring under the necessary preliminary tension or to increase such tension, I provide a lever 93, having its hub 94: mounted on the shaft 83, said lever having a pawl 95 engaging the teeth of matic winding of the power-spring just men-' tioned are as follows: By comparing Figs. 2

i and 6 it will be seen that the gear 87 meshes with a gear 96. The latter is fast on a short 5 shaft 97, and secured on the outer end of said shaft is a band-wheel 98. Asteel strip 99 is secured at one end to said wheel98, is wound several times thereon, and passes up over an endless steel band 100, which is placed on the large band-pulleys 46 46. The strip 99 'extends above the upper stretch of the band 100 and is attached thereto, as by a rivet 101. A sleeve 102, slidinglyfitted to the guide-rod 35, (see Fig. 2,) is provided with an arm or bracket 103, (see Fig.- 1,) having a slot which receives the lower stretchof the band 100, the latter being held in said slot by a clamp 10 1.

The carriage of a type-writing machine during the writing travels with a step-bystep movement in the direction of the arrow in Fig. 2. It will therefore be understood that the upper stretches of the belts 40 and 17 move in the same direction and the lower stretches in the opposite direction. The sleeve of the clutch-selecting finger 34 moves away from the sleeve 102 on the rod 35, and therefore offers no opposition to the following movement of the sleeve 102 as the powerspring unwinds and causes a pull upon the steel strip 99; but when the type-writer carriage is shifted to begin a new line the sleeve of the finger 34 contacts with the sleeve 102 and pushes it toward the right in Fig. 2, thus causing the upper stretch of the band 100 .to move toward the left and pull the strip 99 with it, and so wind up the power-spring through the pulley 98, gears 96 and 87, and pin 89. As has been stated, the movement of the belt 40 is slight, as it only follows the step-bystep movement of the type-writer carriage when the keys of the latter are operated; but the movement imparted thereby to the belt 47 is much greater, owing to the relative sizes of the pulleys of the two belts. the clamp 39 is connected to the upper stretch of belt 40, while the finger 34 is 0perated by connection with the lower stretch of belt 47, the said finger 34 always moves in a direction opposite to the direction of travel of the type-writer carriage and to a much greater extent. The sleeve 102 slides on rod 35 and is clamped to the lower stretch of the band 100, which is so connected to the power-spring mechanism that the sleeve 102 follows the movements of finger 34 when the latter moves away from it and when the power is released. If thefinger 34 is moved to the left from the position shown in Fig. 2, the sleeve 102 will only follow it to a slight degree regardless of the particular numeral that is operated, because the gearing of the power mechanism is such as to impart all the necessary movement to the parts actuated thereby, while the movement of the band 100 and the sleeve 102 is but slight. Said sleeve is only of use to enable the return movement of the type-writer carriage to restore to the spring the power which it has given up. The relative arrangement and connections are such, according to the width of the sheet of paper used in the type-writer carriage or the width of the space on such sheet that is to be printed upon, that when the sleeve of the finger 34 has pushed the sleeve 102 as far toward the right in Fig. 2 as it can be moved one margin of the writing-space on the sheet of paper has been reached.

The force of the power-spring is partly expended in operating the number-wheels, and I will now describe the connections for doing this.

' The power-spring acts through the gear 87, its attached ratchet 90, and the pawl 91 to rotate the gear 92 when the latter is permitted tomove, the pawl 91 being employed to enable the gear 87 to be rotated to wind up the the spring, as described, without affecting the gear 92. Said gear 92 meshes with an idlerpinion 105, (see Fig. 6,) which in turn meshes with a gear 106, fast on a shaft 107, which 1 term the reverse-shaft. Said shaft 107 has hearings in the frame members 82 and 1 and extends inside the latter, and on its inner end are loosely mounted two gears 108 and 109. (See Fig. 7 in connection with Figs. 2 and 3.) Splined on the shaft 107 between the gears 108 109 is a toothed clutch 110, adapted to connect with clutch-teeth formed on the inner sides of said gears 108 109. The clutch is shifted so as to cause the shaft 107 to rotate either of the gears 108 109 by means of a sliding rod 111, having its bent end engaginga groove in the clutch 110 in a common manner, the other end of the rod 111 being Since pivotally connected with a lever 112, which is pivoted to a bracket 113, secured to the frame, and has its free end adapted to engage either one of two retaining-notches in a fixed plate 114. The gear 109 meshes with a spurgear 115, which is fast on the number-wheel shaft 6, while the gear 108 meshes with an elongated idlerpinion 116, which in turn meshes with said gear 115. It will now be obvious that the number-wheel shaft will be actuated in one direction or the other, according to whether power reaches it from the shaft 107 through the gears 108, 116, and 115 or through the gears 109 and 115, and it will also be obvious that the shifting of the clutch 110 between the gears 108 and 109 controls the direction in which the number-wheel shaft 6 is rotated, and consequently whether the number-wheel that is temporarily clutched to said shaft 6 shall indicate the addition or subtraction.

To prevent the power mechanism from operating the number-wheel shaft until desired, a notched wheel 117 is secured upon said shaft. (See Figs. 2 and 8.) A detent or stop pawl or tooth 118, carried by a lever 119, is normally held in one of the recesses or notches of the wheel 117 by a spring 120, secured to the frame and bearing on the top of thelever 119. Pivotally connected with the lever 119 is a vertical link 121, having a shoulder 122, en gaging a pin 123, carried by the lever 70. As has been described herein, each operation of a key of the type-writer results in a downward movement of the long link 69, connected to the lever 70. It will be readily understood, therefore, that such movement causes the release of the notched wheel 117 and permits the power mechanism to rotate the number-wheel shaft 6 and the selected number-wheel to the eXtent' permitted by the coaction of a stoplever and a. stop-finger 76.

As most clearly shown in Fig. 5,'the lower" end of the vertical link 121' is connected by a horizontal link 124 with the upper end of a lever 125, pivoted at 126 to the frame and having its lower end connected by a link 127 with a clip 128, (see Fig. 1,) engaged by the shiftrail129 of the type-writer. This construction permits the usual upper-case letters or characters on the numeral-type levers to be used without causing the actuation of the lever 119 and the consequent release of the power mechanism. This is due to the fact that in the Remington machine, to which this particular embodiment of my invention is applied, the shift-rail 129 moves in the direction of the arrow Z) in Fig. 1 when the upper-case lctters or characters on the numeral-typelevers are to be used. Such'movement of the shiftrail causes the link 127 to actuate the lever 125, which, through the link 124, will swing the vertical link 121 so that the shoulder 122 slips off from the pin 123 of the lever 7 0. Hence, although the levers 52 and 54 and the connec- Secured to the reverse-shaft 107 above described is a pinion 130. (See Figs. 2 and 7.) Said pinion 130 meshes with a gear-wheel 131, which is fast on the shaft 81 and which I refer to as the control-wheel. Below the gear-wheel 131 is a rack 132, (see Figs. 1,3, and 14, ).having a pivot-pin 133 extending into a horizontal guide-slot 134, (see also Fig. 5,) formed in a bracket attached to the side of the machine. The other end of said rack 132 rests upon the roller 68, hereinbefore de scribed as carried and adapted to be elevated by the lever 66. The pivot-pin 133 connects with one end of a sliding rack 135, the front end of which fits a guide formed in a bracket 136, supported by the frame. (See Figs. 1 and 3.) Said rack 135 is constantly in mesh with a gear-wheel 80, secured to the hub of the gear 80. Both gears 80 and 80 are loosely mounted on the shaft 81. Since the two racks 132 and 135 when reciprocated must move in unison owing to the pin connection 133, it will be evident that when the depression of a key type-lever causes the roller 68 to elevate the rack 132 into mesh with the control-wheel131 and is reciprocated thereby the rack 135 must cause the gears 80 and 80 to oscillate, and therefore cause the oscillation of the stop-finger shaft 7 7 through the gears 79 and 78.

In order that the operative parts of the above-described attachment may be quickly disconnected to enable the type-writing machine to be used by itself, Imount the shaft in short vertical slots 137 in the frame, as shown in Fig. 1. Above the shaft 55 is a rock-shaft 138, having segmental arms 139, (see Fig. 6,) having slots 140, which are eccentric to the shaft 138. The ends of the shaft 55 extend through the eccentric slots 140. To disconnect the attachment for the purpose mentioned, the handle 141 is depressed, thus causing the eccentric slots 140 to elevate the shaft 55, so that the bearingscrews 56 of the levers 54 are raised sufficiently to carry them above the radius of action of the levers 52. At the same time the clamp 39 will be released from the steel and 54, and during the first half of such movement the link 57 oscillates the stop-lever 60 and also raises the roll 68, which brings the pivoted rack 132 into mesh withthe control-wheel 131. During the last half of such movement the tooth 118 of the lever 119 is released from the detent-wheel 117 on the number wheel shaft 6. This division of movement is permitted by means of the spring 75, interposed between the top'of the roll-le-v ver 66 and the nut 74 on the upper end of the link 65. The power-spring, through the train of gearing connecting it with the stop-finger shaft 77, turns the latter to the extent permitted by the particular stop-lever 60 which has been actuated and also turns the selected or clutched number-wheel to the correspond ing extent, which will of course accord with the numeral of the key-lever that is operated. The first half of the upward movement of the key-lever when released drops the tooth 118 into a notch of' the detent-wheel 117, and the second half of such movement results in the disconnection of the pivoted rack from the control-wheel 131 and allowing the stopfinger shaft 77 to be returned to original position by the action of a spring 142. Said spring. 142 is shown in Fig. 3 as coiled around one end of the shaft 77 and connected thereto and to the frame. similarly connected to and actuates, the shaft 61, returns the latter and the stop-lever 60, which has been actuated, to their normal positions. Y

As hereinbefore described, the mechanism illustrated provides for subtraction as well as addition, according to the position of the clutch 110, which is shifted by the lever 112. Therefore if the operator has made a mistake in the numeral which has been added the error can be corrected quickly by temporarily shifting the lever 112, operating the proper keylever to reverse the number-wheel the necessary number of units, then erasing the incorrect numeral from the paper, andthen making the correct impression and addition. This same feature of reversal for subtraction provides for the quick return of any or all of the number-wheels to zero.

While I have illustrated and described this invention as an attachment having some of its features so arranged that it is to be operated by a Remington type-writer, it is to be understood that I do not limit myself to such use or adaptation. Obviously the invention may be used by itself as a calculating-Inachine, all such parts of atype-writing machine as are not herein shown or described being omitted, or the levers 52 might be directly actuated by the fingers of the operator without utilizing any parts of a type-writing machine.

Some of the modifications which may be made in the carrying-wheels of the registering mechanism are shown in detail in Figs.

A spring 143, which is rated from each other they may be connected and supported by a body of metal, so as to form practically a pinion at 15 in Figs. 15 to 18. Such pinionmay be of a size substantially the same as the pinion 8 and secured to the side of the wheel 7 opposite the pinion 8, as shown in Figs. 16 and 17, or it may be smaller and secured to the side of the pinion 8, as shown in Fig. 18. In the latter figure the finger 14 has a tooth engaging the teeth of the pinion 15", said teeth being the full equivalent of the pins 15, (shown in Fig. 1,) the said finger lapping well across the line between the pinions 8 and 9. The finger may have a series of teeth instead of one, particularly when it engages a series of closely-set pins or the teeth of pinions. For instance, as

shown in Figs. '15 and 16, it may consist of a section 14; having three teeth. In each form the number of teeth of intermeshing pinions and the relative sizes of the parts will be such that each rotation of the carrying-wheel 9 in either direction will cause the finger to actuate the number-wheel 7 one-tenth of a rotation, and also in each form the connections are such that the finger is so actuated that its outer portion, whether consisting of one or more teeth, is given an accelerated motion, so as to clear the pins or pinion-teeth immediately after actuating them the required distance.

I claim 1. The combination with a shaft having a plurality of number-wheels thereon, of a carr ying-wheel mounted adjacent thereto and actuated by one of said number-wheels, and a rotary carrying-finger mounted on the carryingwheel and adapted to actuate the next number-wheel, means being employed for imparting to said finger a planetary movement around the axis of said carrying-wheel.

2. The combination with a plurality of number-wheels one of which has a pinion and the other a series of pins, of a carrying-wheel meshing with said pinion and having a lateral pin, a pinion mounted on said pin and having a finger adapted to engage one of the series of number-wheel pins, and a fixed gear meshing with the pinion carried by the carryingwheel.

3. In an apparatus of the character described, the combination with a shaft and a number-wheel thereon, said wheel having a series of pins projecting from one side, of a fixed counter shaft having a gear secured thereto, a carrying-wheel mounted on the fixed shaft and rotatively connected with the num ber-wheel, a pinion carried by the carryingwheel and meshing with the fixed gear, and a finger carried by said pinion and adapted to successively engage the pins of the numberwheel.

4. In an apparatus of the character described, the combination with a shaft and a plurality of number-wheels loosely mounted thereon and each having a series of pins projecting from one side, of means for actuating either one of said number-wheels, a gear carried by and at one side of each number-wheel, a fixed counter-shaft having a series of fixed gears and a series of loose gears the latter meshing with the number-wheel gears, and a series of pinions each carrying a finger and mounted on a pin in the side of one of the counter-shaft loose gears and meshing with the adjacent fixed gear on said counter-shaft.

5. The combination with a plurality of number-wheels one of which has apinion and the other a series of pins, of acarrying-wheel meshing with said pinion and having a lateral pin, a pinion mounted on said pin and having a finger adapted to engage one of the series of number-wheel pins, a fixed gear meshing with the pinion carried by the carrying-wheel, and detent devices for preserving the alinement of the wheels.

In testimony whereof I have afiixed my signature in presence of two witnesses.

EDWARD H. PALMER. Witnesses C. F. BROWN, E. BATCHELDER. 

